JP2021172376A - Packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container capable of enhancing the strength and design of the packaging container.
SOLUTION: In a container body 20 of a packaging container 10, a first side surface portion 200 and a second side surface portion 300 facing the first side surface portion 200 are each having a first inner wall 220, 320 extending upward from a bottom surface portion 100 and a bottom surface thereof. The first outer wall 222, 322 extending upward from the portion, and the first upper surface 224, 324 which connects the upper edge of the first inner wall and the upper edge of the first outer wall and is arranged in parallel with the bottom surface portion. Have. The cross section of each of the first side surface portion and the second side surface portion has an inverted triangular shape due to the first inner wall, the first outer wall, and the first upper surface.
[Selection diagram] FIG. 12

Description

The present invention relates to a packaging container capable of enhancing the strength and design of the packaging container.

In Patent Document 1, since the lid is easy to open and the opening of the lid is a clean packaging container, and once opened, it cannot be resealed, so that tampering such as mischief is suppressed. It is intended to provide a packaging container capable of ([0004], abstract). In order to achieve this object, the packaging container (1) of Patent Document 1 (summary, FIG. 1) has a container body (2) having a flange portion (20) on the entire peripheral edge of the square opening and a corner portion. A paper lid (3) having a knob portion (30) protruding from the side to be removed is heat-bonded at the flange portion. A notch (31) is provided at the compatible rising portion of the knob portion of the paper lid body, and a notch means (32) for the knob portion parallel to each other extending from the tip of the notch toward the square opening side is provided. A substantially V-shaped opening starting cut means (33) is provided so as to reach the square opening so as to be separated from the tip of the knob cutting means. The square opening from the opening back half-cut line (34) and the opening back half-cut line so as to substantially go around the peripheral edge of the square opening from one tip of the opening start cutting means to the other tip. A front half-cut line (35) for opening is provided on the peripheral side of the portion.

The container body (2) is not particularly limited as long as it has at least a heat-adhesive resin layer provided with a paper lid (3) and a flange portion (20) that can be heat-bonded. ([0018]).

JP-A-2002-347840

As for cosmetic products, the higher the unit price, the higher the design, so most of the exterior packaging is made of paper. The contents of paper containers cannot be shown, and it is difficult to differentiate from competitors by design because printing on paper containers is the only means. In addition, due to the growing social demand for deplasticization from the aspect of environmental consideration, it is difficult to switch to an outer container other than paper. Therefore, in order to make an outer container that can show the contents even though it is a paper container, for example, when a transparent film is attached to the container, the strength that can be withstood has been an issue.

For example, the configuration of Patent Document 1 cannot meet the above problems. That is, as described above, Patent Document 1 discloses a container body (2) having a heat-adhesive resin layer provided with a paper lid (3) and a flange portion (20) that can be heat-bonded (2). Summary, FIG. 1, [0018]). According to FIGS. 1 and 4 to 6 of Patent Document 1, the container body (2) excluding the flange portion (20) has a quadrangular pyramid shape with each side surface formed of a single wall surface. As described above, the container body having each side surface formed of a single wall surface has room for improvement in terms of strength. Further, since the lid body (3) is made of paper, the contents cannot be shown.

The present invention has been made in consideration of the above problems, and it is possible to increase the strength of the packaging container, and when the lid member is made of a transparent film other than paper, the product inside the container. It is an object of the present invention to provide a packaging container that can be shown and can enhance the design.

The packaging container according to the present invention is
The bottom part and
A first side surface portion extending upward from the bottom surface portion and
It has a container body extending upward from the bottom surface portion and having a second side surface portion facing the first side surface portion.
Each of the first side surface portion and the second side surface portion
The first inner wall extending upward from the bottom surface and
The first outer wall extending upward from the bottom surface and
It has a first upper surface that connects the upper edge of the first inner wall and the upper edge of the first outer wall and is arranged in parallel with the bottom surface portion.
The cross section of each of the first side surface portion and the second side surface portion is characterized in that it has an inverted triangular shape due to the first inner wall, the first outer wall, and the first upper surface.

According to the present invention, the cross sections of the first side surface portion and the second side surface portion facing each other have an inverted triangular shape due to the first inner wall, the first outer wall, and the first upper surface. As a result, even if a force in the direction toward the bottom surface portion is applied to the first upper surface portion, the first side surface portion and the second side surface portion are less likely to be deformed. Therefore, it is possible to improve the strength of the packaging container. Further, when the lid member as a transparent film is used for the packaging container, the product inside the packaging container can be shown.

The packaging container is arranged adjacent to the first side surface portion and the second side surface portion, and adjacent to the first side surface portion and the second side surface portion, and the third side surface portion. A fourth side surface portion facing the side surface portion may be provided. Further, each of the third side surface portion and the fourth side surface portion has a second inner wall extending upward from the bottom surface portion, a second outer wall extending upward from the bottom surface portion, and the first. 2 The upper edge of the inner wall and the upper edge of the second outer wall may be connected to each other and have a second upper surface arranged in parallel with the bottom surface portion. Further, the cross section of each of the third side surface portion and the fourth side surface portion may have an inverted triangular shape due to the second inner wall, the second outer wall and the second upper surface.

According to the present invention, the cross section of the first to fourth side surface portions has an inverted triangular shape due to the first and second inner walls, the first and second outer walls, and the first and second upper surfaces. As a result, even if a force in the direction toward the bottom surface is applied to the top surface, the first to fourth side surface portions are less likely to be deformed. Therefore, the strength of the packaging container can be further improved.

The packaging container may further include a lid member that is adhered to at least the first upper surface by heat adhesion or an adhesive. As a result, even if the lid member is adhered to the first upper surface by applying a force toward the bottom surface, the strength can be maintained by the inverted triangular structure of each side surface (at least the first and second side surfaces). Become. Further, when the lid member is made of a transparent film, the product inside the packaging container can be shown.

The bottom surface portion is continuous with the first bottom surface portion of the first side surface portion and the first outer wall portion of the second side surface portion and the first inner surface of the first side surface portion, and is on the upper side of the first bottom surface portion. A second bottom surface to be located may be provided with a third bottom surface that is continuous with the first inner surface of the second side surface portion and is located above the second bottom surface. Further, the tip-side outer edge of the second bottom surface may extend to the root of the second side surface portion, and the tip-side outer edge of the third bottom surface may extend to the root of the first side surface portion. Further, each of the third side surface portion and the fourth side surface portion may have a fourth bottom surface continuous with the lower edge of the second inner wall. The fourth bottom surface may be located between the first bottom surface and the second bottom surface.

According to the present invention, it is possible to increase the strength of the bottom surface portion by providing not only the first bottom surface but also the second bottom surface and the third bottom surface. Further, the tip-side outer edge of the second bottom surface extends to the root of the second side surface portion, and the tip-side outer edge of the third bottom surface extends to the root of the first side surface portion. This makes it possible to suppress the misalignment of each of the first side surface portion and the second side surface portion.

Further, according to the present invention, the first bottom surface continuous with the lower edge of the second inner wall of the third side surface portion and the fourth side surface portion is continuous with the first outer wall of the first side surface portion and the second side surface portion. It is located between the bottom surface and the second bottom surface continuous with the first inner wall of the first side surface portion (and the third bottom surface continuous with the first inner wall of the second side surface portion). This makes it possible to easily fix the third side surface portion and the fourth side surface portion to the bottom surface portion and the first side surface portion (and the second side surface portion).

Each of the third side surface portion and the fourth side surface portion may include an inner side surface continuous with both side portions of the second inner wall and an outer side surface continuous with both side portions of the second outer wall. Further, the inner side surface and the outer side surface may be inserted between the first inner wall and the first outer wall of the first side surface portion and the second side surface portion. As a result, the third side surface portion and the fourth side surface portion can be easily fixed to the first side surface portion and the second side surface portion.

According to the present invention, it is possible to increase the strength of the packaging container (particularly the container body). In addition, when a transparent film material other than paper is selected as the lid member, the product inside the container can be shown and the design can be enhanced.

It is an exploded perspective view of the packaging container which concerns on one Embodiment of this invention. It is a development view of the container body of the packaging container which concerns on the said Embodiment. It is a perspective view which shows the expanded state (initial state) of the container body of the said packaging container which concerns on the said Embodiment. It is a figure which shows the 1st state of the container body at the time of assembly in the said embodiment. It is a figure which shows the 2nd state of the container body at the time of assembly in the said embodiment. FIG. 5 is a cross-sectional view taken along the line AA of FIG. It is a figure which shows the 3rd state of the container body at the time of assembly in the said embodiment. It is a figure which shows the 4th state of the container body at the time of assembly in the said embodiment. It is a figure which shows the 5th state of the container body at the time of assembly in the said embodiment. 9 is a cross-sectional view taken along the line BB of FIG. It is a perspective view which shows the assembly completion state of the container body of the packaging container which concerns on the said Embodiment. FIG. 11 is a cross-sectional view taken along the line CC of FIG. FIG. 11 is a cross-sectional view taken along the line DD of FIG. It is an exploded perspective view of the packaging container which concerns on the modification of this invention. It is a developed view of the container body of the packaging container which concerns on the said modification. FIG. 5 is a cross-sectional view taken along the line EE of FIG. 14 in a state where the stored item is housed in the container body and the film is adhered to the container body.

A. One Embodiment <A-1. Configuration of one embodiment>
[A-1-1. overall structure]
FIG. 1 is an exploded perspective view of a packaging container 10 according to an embodiment of the present invention. The packaging container 10 has a container body 20 and a film 22. The film 22 is adhered to the container body 20 in a state where the stored item X is stored. The stored item X in the present embodiment is a cosmetic product (lipstick or the like), but other items may be the stored item X.

[A-1-2. Container body 20]
(A-1-2-1. Outline of container body 20)
The container body 20 has a rectangular parallelepiped shape with an opening at the top. The container body 20 is made of paper (specifically, made of paperboard for paper containers). As shown in FIG. 1, the container body 20 has a bottom surface portion 100, a first side surface portion 200, a second side surface portion 300, a third side surface portion 400, and a fourth side surface portion 500. The first to fourth side surface portions 200, 300, 400, and 500 all extend upward from the bottom surface portion 100.

The second side surface portion 300 faces the first side surface portion 200. The first side surface portion 200 and the second side surface portion 300 are side surface portions in the longitudinal direction. The third side surface portion 400 is arranged adjacent to the first side surface portion 200 and the second side surface portion 300. The fourth side surface portion 500 is arranged adjacent to the first side surface portion 200 and the second side surface portion 300, and faces the third side surface portion 400. The third side surface portion 400 and the fourth side surface portion 500 are side surface portions in the width direction. A storage portion 600 for storing the stored item X is formed inside the container body 20 by the bottom surface portion 100, the first side surface portion 200, the second side surface portion 300, the third side surface portion 400, and the fourth side surface portion 500. NS.

(A-1-2-2. Explanation of development view)
FIG. 2 is a developed view of the container body 20 of the packaging container 10 according to the present embodiment. In FIG. 2, the solid line shows the outline of the container body 20 in the unfolded state, the broken line shows the mountain fold part, and the alternate long and short dash line shows the valley fold part. As shown in FIG. 2, the unfolded container body 20 has a first bottom surface 110, a first large piece 210, a second large piece 310, a first small piece 410, and a second small piece 510. ..

In FIG. 2, the first large piece 210 is located on the right side of the first bottom surface 110. The first large piece portion 210 mainly constitutes the first side surface portion 200 and also constitutes the bottom surface portion 100 in the container main body 20 in the assembled state. In FIG. 2, the second large piece 310 is located on the left side of the first bottom surface 110. The second large piece portion 310 mainly constitutes the second side surface portion 300 and also constitutes the bottom surface portion 100 in the container main body 20 in the assembled state.

In FIG. 2, the first small piece portion 410 is located above the first bottom surface 110. The first small piece portion 410 mainly constitutes the third side surface portion 400 and also constitutes the bottom surface portion 100 in the container main body 20 in the assembled state. In FIG. 2, the second small piece portion 510 is located below the first bottom surface 110. The second small piece portion 510 mainly constitutes the fourth side surface portion 500 and also constitutes the bottom surface portion 100 in the container main body 20 in the assembled state.

(A-1-2-3. Assembling method of container body 20)
In order to facilitate understanding of the structure of the container body 20, a method of assembling the container body 20 will be described here. FIG. 3 is a perspective view showing an unfolded state (initial state) of the container body 20 of the packaging container 10 according to the present embodiment. 4 and 5 are views showing the first and second states of the container body 20 at the time of assembly in the present embodiment. FIG. 6 is a cross-sectional view taken along the line AA of FIG. 7, 8 and 9 are diagrams showing the third, fourth and fifth states of the container body 20 at the time of assembly in the present embodiment. FIG. 10 is a cross-sectional view taken along the line BB of FIG. FIG. 11 is a perspective view showing an assembled state of the container body 20 of the packaging container 10 according to the present embodiment. FIG. 12 is a cross-sectional view taken along the line CC of FIG. FIG. 13 is a cross-sectional view taken along the line DD of FIG.

When assembling the container body 20, the operator bends the first small piece 410 to form the third side surface 400 and the like (FIGS. 4 to 6), and then bends the second small piece 510 to form the fourth side surface 500 and the like. (Fig. 7). After that, the operator bends the first large piece portion 210 to form the first side surface portion 200 and the like (FIGS. 8 to 10), and then bends the second large piece portion 310 to form the second side surface portion 300 and the like to form the container main body. The assembly of 20 is completed (FIGS. 11 to 13).

(A-1-2-4. Bottom part 100)
Next, each part of the container body 20 after the assembly is completed will be described. First, the bottom surface portion 100 will be described. The bottom surface portion 100 is a portion located below the container body 20 in the assembled state, and supports the stored item X from below. As can be understood from FIGS. 1, 2, and the like, the bottom surface portion 100 has a rectangular shape.

As shown in FIG. 12, the bottom surface portion 100 is formed by overlapping the first bottom surface 110, the second bottom surface 112 of the first large piece 210, and the third bottom surface 114 of the second large piece 310. The first bottom surface 110 is continuous with the first outer walls 222 and 322 (described later) of the first side surface portion 200 and the second side surface portion 300 (FIG. 2). The second bottom surface 112 is continuous with the first inner wall 220 (described later) of the first side surface portion 200 (FIG. 2). Further, as shown in FIG. 12, the second bottom surface 112 is located above the first bottom surface 110. As shown in FIG. 12, the tip-side outer edge of the second bottom surface 112 extends to the root of the second side surface portion 300. Similarly, the third bottom surface 114 is continuous with the first inner wall 320 (described later) of the second side surface portion 300 (FIG. 2). Further, as shown in FIG. 12, the third bottom surface 114 is located above the first bottom surface 110 and the second bottom surface 112. As shown in FIG. 12, the tip-side outer edge of the third bottom surface 114 extends to the root of the first side surface portion 200.

Further, as shown in FIG. 13, the bottom surface portion 100 also includes the fourth bottom surface portion 120a of the first small piece portion 410. Similarly, the bottom surface portion 100 also includes the fourth bottom surface portion 120b of the second small piece portion 510 (see FIG. 2). The fourth bottom surfaces 120a and 120b have a rectangular shape and are continuous with the lower edges of the second inner walls 420 and 520. The fourth bottom surfaces 120a and 120b of the first small piece portion 410 and the second small piece portion 510 are arranged between the first bottom surface 110 and the second bottom surface 112.

(A-1-2-5. First side surface portion 200 and second side surface portion 300)
As shown in FIG. 12, the first side surface portion 200 has a first inner wall 220, a first outer wall 222, and a first upper surface 224. The first inner wall 220 extends upward and inward from the bottom surface portion 100. As shown in FIG. 2, the first inner wall 220 has a rectangular shape. The first outer wall 222 extends upward from the bottom surface portion 100. As shown in FIG. 2, the first outer wall 222 has a rectangular shape. The height of the first outer wall 222 (horizontal direction in FIG. 2) is shorter than the height of the first inner wall 220. The depth of the first outer wall 222 (vertical direction in FIG. 2) is longer than the depth of the first inner wall 220.

The first upper surface 224 connects the upper edge of the first inner wall 220 and the upper edge of the first outer wall 222, and is arranged in parallel with the bottom surface portion 100. As shown in FIG. 2, the first upper surface 224 is trapezoidal, the depth of the short bottom (vertical direction in FIG. 2) is equal to the depth of the first inner wall 220, and the depth of the long bottom is the first outer wall 222. Is equal to the depth of. As is clear from FIG. 12, the cross section of the first side surface portion 200 has an inverted triangular shape due to the first inner wall 220, the first outer wall 222, and the first upper surface 224.

The second side surface portion 300 also has the same configuration as the first side surface portion 200. That is, as shown in FIG. 12, the second side surface portion 300 has a first inner wall 320, a first outer wall 322, and a first upper surface 324. The cross section of the second side surface portion 300 has an inverted triangular shape due to the first inner wall 320, the first outer wall 322, and the first upper surface 324.

(A-1-2-6. Third side surface portion 400 and fourth side surface portion 500)
As shown in FIG. 13, the third side surface portion 400 has a second inner wall 420, a second outer wall 422, and a second upper surface 424. The second inner wall 420 extends upward and inward from the bottom surface portion 100. As shown in FIG. 2, the second inner wall 420 has a trapezoidal shape. The second outer wall 422 extends upward from the bottom surface portion 100. As shown in FIG. 2, the second outer wall 422 has a rectangular shape. The height of the second outer wall 422 (vertical direction in FIG. 2) is shorter than the height of the second inner wall 420. The width of the second outer wall 422 (horizontal direction in FIG. 2) is longer than the width of the second inner wall 420.

The second upper surface 424 connects the upper edge of the second inner wall 420 and the upper edge of the second outer wall 422, and is arranged in parallel with the bottom surface 100. As shown in FIG. 2, the second upper surface 424 is trapezoidal, the width of the short bottom (horizontal direction in FIG. 2) is equal to the width of the short bottom of the first inner wall 420, and the width of the long bottom is the first. 1 Equal to the width of the outer wall 422. As is clear from FIG. 13, the cross section of the third side surface portion 400 has an inverted triangular shape due to the second inner wall 420, the second outer wall 422, and the second upper surface 424.

As is clear from FIG. 2 and the like, the third side surface portion 400 has an inner side surface 430 and an outer side surface 432. The inner side surface 430 has a rectangular shape and is continuous with both sides of the second inner wall 420. The corner on the tip side of the inner side surface 430 is provided with a curvature. The outer side surface 432 has a rectangular shape and is continuous with both side portions of the second outer wall 422. The upper corner on the tip end side of the outer side surface 432 is provided with a curvature.

As shown in FIG. 12, the inner side surface 430 and the outer side surface 432 are between the first inner wall 220 and the first outer wall 222 of the first side surface portion 200 and the first inner wall 320 and the first outer wall 322 of the second side surface portion 300. It is inserted in between. In the state where the first small piece portion 410 is assembled (FIG. 5), the upper side of the inner side surface 430 is located slightly above the second upper surface 424. Then, when the first large piece portion 210 and the second large piece portion 310 are assembled and the first upper surface 224 and 324 cover the inner side surface 430, the inner side surface 430 is bent and stabilized. As a result, the third side surface portion 400 is less likely to be displaced with respect to the first side surface portion 200 and the second side surface portion 300.

The fourth side surface portion 500 also has the same configuration as the third side surface portion 400. That is, as is clear from FIG. 2, the fourth side surface portion 500 has a second inner wall 520, a second outer wall 522, and a second upper surface 524. The cross section of the fourth side surface portion 500 has an inverted triangular shape due to the second inner wall 520, the second outer wall 522, and the second upper surface 524. As is clear from FIG. 2 and the like, the fourth side surface portion 500 has an inner side surface 530 and an outer side surface 532.

[A-1--3. Film 22 (closure member)]
The film 22 (FIG. 1) is heat-bonded to the first upper surface 224, 324 of the first side surface portion 200 and the second side surface portion 300, and the second upper surface 424, 524 of the third side surface portion 400 and the fourth side surface portion 500. It is glued to. The bonding method may be a method other than thermal bonding (for example, bonding with an adhesive).

As shown in FIG. 1, when the film 22 which is a lid member is made into a transparent film, it has a printed portion 700 and a non-printed portion 702. The purchaser or the like of the stored item X can visually recognize the stored item X through the transparent non-printed portion 702. The film 22 of the present embodiment has a transparent base material, a printing layer, and a sealing layer for heat adhesion. The film 22 may have other configurations of a single layer or a plurality of layers. The film 22 of the present embodiment and the container body 20 are bonded by heat adhesion or an adhesive, and as a means used, a heat sealant that can be applied to the film by printing is printed on the base material of the film 22. There are means and means for laminating a sealant that can be heat-sealed with the container body.

<A-2. Manufacturing method of packaging container 10 of this embodiment>
The packaging container 10 according to the present embodiment is manufactured by the following manufacturing method. That is, the operator assembles the container body 20 by the method described with reference to FIGS. 3 to 13. Next, the operator inserts the stored item X into the container body 20. After that, the operator heat-bonds the film 22 to the container body 20 by using a heat-bonding device (not shown) with the film 22 placed on the container body 20.

<A-3. Effect of this embodiment>
According to the present embodiment as described above, the cross sections of the first side surface portion 200 and the second side surface portion 300 facing each other are formed by the first inner walls 220 and 320, the first outer walls 222 and 322, and the first upper surface 224 and 324. It has an inverted triangular shape (Fig. 12). As a result, even if a force in the direction toward the bottom surface portion 100 is applied to the first upper surface portion 224 and 324, the first side surface portion 200 and the second side surface portion 300 are less likely to be deformed. Therefore, it is possible to improve the strength of the packaging container 10 (particularly the container body 20). Further, by using the transparent film 20 (cover member), it is possible to show the stored item X (commodity) which is the contents of the packaging container 10.

In the present embodiment, the packaging container 10 has a third side surface portion 400 arranged adjacent to the first side surface portion 200 and the second side surface portion 300, and adjacent to the first side surface portion 200 and the second side surface portion 300. It is provided with a fourth side surface portion 500 that is arranged and faces the third side surface portion 400 (FIG. 1 and the like). The third side surface portion 400 and the fourth side surface portion 500 each have a second inner wall 420, 520 extending upward from the bottom surface portion 100 and a second outer wall 422, 522 extending upward from the bottom surface portion 100, respectively. And a second upper surface 424, 524 that connects the upper edge of the second inner wall 420, 520 and the upper edge of the second outer wall 422, 522 and is arranged in parallel with the bottom surface 100 (FIGS. 13, 2, etc.). ). The cross section of each of the third side surface portion 400 and the fourth side surface portion 500 has an inverted triangular shape due to the second inner wall 420, 520, the second outer wall 422, 522, and the second upper surface 424, 524 (FIG. 13).

According to the present embodiment, the cross sections of the first to fourth side surface portions 200, 300, 400, 500 are the first inner wall 220, 320, the second inner wall 420, 520, the first outer wall 222, 222, and the second outer wall 422. , 522, the first upper surface 224, 324 and the second upper surface 424, 524 all form an inverted triangular shape. As a result, even if a force in the direction toward the bottom surface portion 100 is applied to the first upper surface portion 224, 324 and the second upper surface portion 424, 524, the first to fourth side surface portions 200, 300, 400, 500 are deformed. It becomes difficult. Therefore, the strength of the packaging container 10 can be further improved.

In the present embodiment, the packaging container 10 includes a film 22 (cover member) bonded to the first upper surface 224, 324 and the second upper surface 424, 524 by heat adhesion or an adhesive (FIG. 1). As a result, even if the film 22 is adhered to the first upper surface 224, 324 and the second upper surface 424, 524 by applying a force toward the bottom surface 100 side, the inverted triangular structures of the side surface portions 200, 300, 400, 500 are formed. It becomes possible to maintain the strength. Further, by using the transparent film 22 as the lid member, it is possible to show the stored item X (commodity) which is the contents of the packaging container 10.

In the present embodiment, the bottom surface portion 100 is continuous with the first bottom surface 110 continuous with the first outer walls 222 and 222 of the first side surface portion 200 and the second side surface portion 300, and the first inner wall 220 of the first side surface portion 200. A second bottom surface 112 located above the first bottom surface 110 and a third bottom surface 114 located above the second bottom surface 112, which is continuous with the first inner wall 320 of the second side surface portion 300 (FIG. 12). .. The tip-side outer edge of the second bottom surface 112 extends to the root of the second side surface portion 300, and the tip-side outer edge of the third bottom surface 114 extends to the root of the first side surface portion 200 (FIG. 12). Further, each of the third side surface portion 400 and the fourth side surface portion 500 includes fourth bottom surfaces 120a and 120b continuous with the lower edges of the second inner wall 420 and 520 (FIG. 13 and the like). The fourth bottom surfaces 120a and 120b are located between the first bottom surface 110 and the second bottom surface 112 (FIG. 13 and the like).

According to this embodiment, it is possible to increase the strength of the bottom surface portion 100 by providing not only the first bottom surface 110 but also the second bottom surface 112 and the third bottom surface 114. The tip-side outer edge of the second bottom surface 112 extends to the root of the second side surface portion 300, and the tip-side outer edge of the third bottom surface 114 extends to the root of the first side surface portion 200. As a result, it is possible to suppress the positional deviation (horizontal direction in FIG. 12) of each of the first side surface portion 200 and the second side surface portion 300.

Further, according to the present embodiment, the fourth bottom surfaces 120a and 120b continuous with the lower edges of the second inner walls 420 and 520 of the third side surface portion 400 and the fourth side surface portion 500 form the first side surface portions 200 and the second side surface. The first bottom surface 110 continuous with the first outer wall 222, 222 of the portion 300 and the second bottom surface 112 (and the first inner wall 220, 320 of the second side surface portion 300) continuous with the first inner walls 220 and 320 of the first side surface portion 200. It is located between the third bottom surface 114) and the continuous third bottom surface 114). As a result, the third side surface portion 400 and the fourth side surface portion 500 can be easily fixed to the bottom surface portion 100 and the first side surface portion 200 (and the second side surface portion 300).

In the present embodiment, each of the third side surface portion 400 and the fourth side surface portion 500 is continuous with the inner side surfaces 430 and 530 continuous with both side portions of the second inner wall 420 and 520 and with both side portions of the second outer wall 422 and 522. It is provided with outer side surfaces 432 and 532 (FIG. 2 and the like). The inner side surfaces 430, 530 and the outer side surfaces 432 and 532 are inserted between the first inner walls 220 and 320 and the first outer walls 222 and 222 of the first side surface portion 200 or the second side surface portion 300 (FIG. 12 and the like). .. As a result, the third side surface portion 400 and the fourth side surface portion 500 can be easily fixed to the first side surface portion 200 and the second side surface portion 300.

B. Modifications It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that various configurations can be adopted based on the contents described in the present specification. For example, the following configuration can be adopted.

<B-1. Container body 20>
[B-1-1. Overall]
In the above embodiment, the container body 20 has a rectangular parallelepiped shape (FIG. 1 and the like). However, for example, from the viewpoint of making the cross section of the first side surface portion 200 or the like an inverted triangular shape, the present invention is not limited to this. For example, the container body 20 may have a quadrangular frustum shape.

In the above embodiment, the container body 20 is made of paper (specifically, made of paperboard for paper containers). However, for example, from the viewpoint of making the cross section of the first side surface portion 200 or the like an inverted triangular shape, the present invention is not limited to this. The container body 20 may be made of paper (for example, corrugated cardboard) or plastic other than the paperboard for paper containers, for example.

In the above embodiment, the container body 20 has a bottom surface portion 100, a first side surface portion 200, a second side surface portion 300, a third side surface portion 400, and a fourth side surface portion 500 (FIG. 1 and the like). However, when another film, tape, or the like is used, the third side surface portion 400 and the fourth side surface portion 500 as paper may be omitted. Alternatively, depending on the use of the packaging container 10, one or both of the third side surface portion 400 and the fourth side surface portion 500 may be omitted.

[B-1-2. Bottom part 100]
In the above embodiment, the bottom surface portion 100 has a first bottom surface 110, a second bottom surface 112, a third bottom surface 114, and a fourth bottom surface 120a, 120b (FIGS. 12, 13, etc.). However, for example, from the viewpoint of making the cross section of the first side surface portion 200 or the like an inverted triangular shape, the present invention is not limited to this. For example, one or more of the second bottom surface 112, the third bottom surface 114, and the fourth bottom surface 120a, 120b may be omitted.

FIG. 14 is an exploded perspective view of the packaging container 10A according to the modified example of the present invention. FIG. 15 is a developed view of the container body 20a of the packaging container 10A according to the modified example. FIG. 16 is a cross-sectional view taken along the line EE of FIG. 14 in a state where the stored item X is housed in the container body 20a and the film 22 is adhered to the container body 20a.

As shown in FIGS. 15 and 16, the second large piece portion 310a of the container body 20 of this modified example has a trapezoidal portion 330 instead of the third bottom surface 114 of the above embodiment. The trapezoidal portion 330 has side walls 332a and 332b and a pedestal surface 334. As shown in FIG. 16, the bilateral walls 332a and 332b extend upward and inward along the first inner walls 220 and 320. The pedestal surface 334 connects the upper edges of the side walls 332a and 332b. Further, a through hole 336 is formed in the center of the pedestal surface 334. Therefore, the trapezoidal portion 330 supports the stored item X in a state where a part of the stored item X has entered the through hole 336. This makes it easier to prevent the misalignment of the stored item X. Further, since the side walls 332a and 332b are arranged along the first inner walls 220 and 320, they are less likely to be deformed by the lateral force in FIG.

In the above embodiment, the tip-side outer edge of the second bottom surface 112 extends to the root of the second side surface portion 300, and the tip-side outer edge of the third bottom surface 114 extends to the root of the first side surface portion 200. (Fig. 12). However, for example, from the viewpoint of making the cross section of the first side surface portion 200 or the like an inverted triangular shape, the present invention is not limited to this. For example, the tip-side outer edge of the second bottom surface 112 or the tip-side outer edge of the third bottom surface 114 may have a length that does not reach half of the lateral direction of FIG.

[B-1--3. 1st side surface portion 200 to 4th side surface portion 500]
In the above embodiment, the cross sections of the first side surface portion 200, the second side surface portion 300, the third side surface portion 400, and the fourth side surface portion 500 are all inverted triangular (FIGS. 12, 13, etc.). However, for example, from the viewpoint of making the cross section of the first side surface portion 200 or the second side surface portion 300 an inverted triangular shape, the present invention is not limited to this. For example, only the first side surface portion 200 and the second side surface portion 300 may have an inverted triangular shape.

In the above embodiment, the first inner walls 220 and 320 extend upward and inward from the bottom surface 100, and the first outer walls 222 and 222 extend vertically from the bottom surface 100 (FIG. 12). ). However, it is not limited to this, for example, from the viewpoint of forming an inverted triangular shape. For example, the first inner walls 220 and 320 may extend upward and inward from the bottom surface 100, and the first outer walls 222 and 222 may extend upward and outward from the bottom surface 100. The same applies to the second inner walls 420 and 420 and the second outer walls 422 and 522.

<B-2. Film 22>
In the above embodiment, the film 22 is provided with a printed portion 700 and a non-printed portion 702 (FIG. 1). However, for example, from the viewpoint of closing the opening of the container body 20, the film 22 may be composed of only the printed portion 700 or only the non-printed portion 702.

In the above embodiment, the film 22 is used as the lid member for closing the opening of the container body 20 (FIG. 1). However, for example, from the viewpoint of closing the opening of the container body 20, a lid member other than the film 22 may be used. Alternatively, for example, the film 22 (cover member) may be omitted from the viewpoint of making the cross section of the first side surface portion 200 or the like an inverted triangular shape.

10, 10A ... Packaging container 20, 20a ... Container body 22 ... Film (cover member) 100 ... Bottom part 110 ... First bottom surface 112 ... Second bottom surface 114 ... Third bottom surface 120a, 120b ... Fourth bottom surface 200 ... First side surface Parts 220, 320 ... 1st inner wall 222, 322 ... 1st outer wall 224, 324 ... 1st upper surface 300 ... 2nd side surface 400 ... 3rd side surface 420, 520 ... 2nd inner wall 422, 522 ... 2nd outer wall 424, 524 ... 2nd upper surface 430 ... 530 ... Inner side surface 432, 532 ... Outer side surface 500 ... 4th side surface portion

Claims (5)

The bottom part and
A first side surface portion extending upward from the bottom surface portion and
A packaging container having a container body extending upward from the bottom surface portion and having a second side surface portion facing the first side surface portion.
Each of the first side surface portion and the second side surface portion
The first inner wall extending upward from the bottom surface and
The first outer wall extending upward from the bottom surface and
It has a first upper surface that connects the upper edge of the first inner wall and the upper edge of the first outer wall and is arranged in parallel with the bottom surface portion.
A packaging container characterized in that the cross section of each of the first side surface portion and the second side surface portion has an inverted triangular shape due to the first inner wall, the first outer wall, and the first upper surface. In the packaging container according to claim 1,
The packaging container is
A third side surface portion arranged adjacent to the first side surface portion and the second side surface portion, and
A fourth side surface portion which is arranged adjacent to the first side surface portion and the second side surface portion and faces the third side surface portion is provided.
Each of the third side surface portion and the fourth side surface portion
A second inner wall extending upward from the bottom surface,
A second outer wall extending upward from the bottom surface and
It has a second upper surface that connects the upper edge of the second inner wall and the upper edge of the second outer wall and is arranged in parallel with the bottom surface portion.
A packaging container characterized in that the cross section of each of the third side surface portion and the fourth side surface portion has an inverted triangular shape due to the second inner wall, the second outer wall, and the second upper surface. In the packaging container according to claim 1 or 2.
A packaging container further comprising a lid member that is adhered to at least the first upper surface by heat adhesion or an adhesive. In the packaging container according to claim 2 or claim 3, which is subordinate to claim 2.
The bottom surface
A first bottom surface continuous with the first outer wall of the first side surface portion and the second side surface portion, and
A second bottom surface that is continuous with the first inner surface of the first side surface portion and is located above the first bottom surface,
It is provided with a third bottom surface that is continuous with the first inner surface of the second side surface portion and is located above the second bottom surface.
The tip-side outer edge of the second bottom surface extends to the root of the second side surface portion.
The tip-side outer edge of the third bottom surface extends to the root of the first side surface portion.
Each of the third side surface portion and the fourth side surface portion has a fourth bottom surface continuous with the lower edge of the second inner wall.
The fourth bottom surface is a packaging container characterized in that it is located between the first bottom surface and the second bottom surface. In the packaging container according to claim 2 or 4, or claim 3, which is subordinate to claim 2.
Each of the third side surface portion and the fourth side surface portion
An inner side surface continuous with both sides of the second inner wall,
It is provided with both sides of the second outer wall and continuous outer side surfaces.
A packaging container characterized in that the inner side surface and the outer side surface are inserted between the first inner wall portion and the first outer wall portion of the first side surface portion and the second side surface portion.

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